Beneficiation method for barite rich in calcite and witherite

A beneficiation method and barite technology, applied in flotation, solid separation and other directions, to achieve the effects of low beneficiation cost, good beneficiation index and enhanced collection capacity

Inactive Publication Date: 2018-07-27
BEIJING RESEARCH INSTITUTE OF CHEMICAL ENGINEERING AND METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Barite flotation research mainly focuses on the separation of barite from quartz, mica, fluorite and other gangue minerals, and the beneficiation of carbon-containing and muddy barite ore. There is no relevant report on the beneficiation method

Method used

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  • Beneficiation method for barite rich in calcite and witherite

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The barite ore studied in the embodiment contains 76.30% of barite, 5.64% of witherite and 7.36% of calcite.

[0019] The barite ore with a particle size of -200 mesh accounting for 85% is made into a slurry with a concentration of 30%, and put into a flotation tank, and the temperature of the slurry is 28°C. The barite and witherite are flotationed with one roughing and five refining processes. Add acidified water glass 1500g / t to suppress and disperse during roughing, and stir for 5 minutes. Collect barite and witherite by using combined collectors. The combined collectors are sodium oleate 550g / t, sodium lauryl sulfate 50g / t, foaming agent terpineol oil 35g / t, and stirred for 5 minutes. When selecting, add acidic water glass to suppress and disperse, the dosage is 200g / t, 200g / t, 200g / t, 100g / t, 100g / t respectively. The grade of barium oxide in the flotation concentrate is 63.66%, and the recovery rate of barium oxide is 81.13%. Flotation concentrate density 4.23g...

Embodiment 2

[0021] The barite ore studied in the embodiment contains 76.30% of barite, 5.64% of witherite and 7.36% of calcite.

[0022] The barite ore with a particle size of -200 mesh accounting for 85% is made into a slurry with a concentration of 30%, and put into a flotation tank, and the temperature of the slurry is 28°C. The flotation operation adopts a closed-circuit test process of one rough selection and five selections. Add acidified water glass 1300g / t to suppress and disperse during roughing, and stir for 5 minutes. Add combined collectors sodium oleate 500g / t, sodium lauryl sulfate 50g / t, add terpineol oil 40g / t, and stir for 5 minutes. Add acidic water glass to inhibit and disperse during selection, the dosage is 150g / t, 150g / t, 150g / t, 100g / t, 100g / t respectively. The five selected products in the tank return to the previous process in sequence. The results of the closed-circuit test show that the yield of barite concentrate is 73.19%, the grade of barium oxide is 64.36...

Embodiment 3

[0026] A mineral processing method rich in calcite and witherite barite, comprising the following steps:

[0027] S1: Ore crushing: crush barite ore to -2mm;

[0028] S2: Grinding: Grinding the crushed barite ore, and grinding the ore to -200 mesh accounts for 60%;

[0029] S3: Preparation of flotation pulp: Put the pulp treated by S2 into the flotation machine, adjust the pulp concentration to 10%, and the pulp temperature to 25°C;

[0030] S4: Inhibition and dispersion: Add gangue mineral inhibitors to the pulp, the dosage is 500-3000g / t; fully stir evenly, the stirring speed is 500r / min, and the stirring time is 3min;

[0031] S5: Flotation of barite: add barite collector sodium oleate, dosage is 300g / t, foaming agent terpineol oil 35g / t; fully stir evenly, stirring speed is 500r / min, stirring time is 1min , Before the aerated flotation, let the barite minerals and the collector fully act, after stirring evenly, open the intake valve of the flotation machine, let the air ...

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Abstract

The invention provides a beneficiation method for barite rich in calcite and witherite. According to the beneficiation method, the problem that the quality of flotation concentrate is poor due to thefact that the floatability of gangue minerals such as the calcite and fluorite is similar to that of the barite is solved. The beneficiation method is characterized in that acidified sodium silicate is adopted for inhibition and dispersion so that separation of the barite from the gangue minerals can be well realized; and a combined collecting agent composed of sodium oleate and sodium dodecyl sulfate is selected, so that relatively strong collecting capacity and good selectivity on the barite and the witherite are realized. According to the beneficiation method, barite concentrate with the relatively high recovery rate can be obtained, the quality of the concentrate meets the requirements of national standard first-grade products of drilling grade barite powder, and the barite ores rich in the calcite and the witherite can be developed and utilized.

Description

technical field [0001] The invention belongs to the field of mineral processing, and relates to an ore flotation method, in particular to a mineral processing method rich in calcite and witherite barite. Background technique [0002] Barite is a very important non-metallic mineral raw material, mainly used in petroleum, chemical, paint, filler and other industrial sectors, of which 80-90% is used as mud weighting agent for oil drilling. Due to the large difference in density between barite and gangue minerals (barite 4.3-4.7g / cm 3 , Quartz 2.65g / cm 3 ), gravity separation is mostly used at home and abroad when ore beneficiation. At present, most barite mines in my country only carry out hand separation, ore washing and jigging. For those barite ores with fine particle size, close symbiotic relationship with gangue ore, and complex ore composition, gravity separation is difficult to achieve good results, and only flotation can obtain barite concentrate that meets the requi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/008B03D1/002B03D101/02B03D103/02
CPCB03D1/002B03D1/008B03D2201/007B03D2201/02
Inventor 刘志超李广强录德李春凤赵凤岐牛玉清唐宝彬
Owner BEIJING RESEARCH INSTITUTE OF CHEMICAL ENGINEERING AND METALLURGY
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